src/definitions/modules/dropdown.js
/*!
* # Semantic UI - Dropdown
* http://github.com/semantic-org/semantic-ui/
*
*
* Released under the MIT license
* http://opensource.org/licenses/MIT
*
*/
;(function ($, window, document, undefined) {
'use strict';
window = (typeof window != 'undefined' && window.Math == Math)
? window
: (typeof self != 'undefined' && self.Math == Math)
? self
: Function('return this')()
;
$.fn.dropdown = function(parameters) {
var
$allModules = $(this),
$document = $(document),
moduleSelector = $allModules.selector || '',
hasTouch = ('ontouchstart' in document.documentElement),
time = new Date().getTime(),
performance = [],
query = arguments[0],
methodInvoked = (typeof query == 'string'),
queryArguments = [].slice.call(arguments, 1),
returnedValue
;
$allModules
.each(function(elementIndex) {
var
settings = ( $.isPlainObject(parameters) )
? $.extend(true, {}, $.fn.dropdown.settings, parameters)
: $.extend({}, $.fn.dropdown.settings),
className = settings.className,
message = settings.message,
fields = settings.fields,
keys = settings.keys,
metadata = settings.metadata,
namespace = settings.namespace,
regExp = settings.regExp,
selector = settings.selector,
error = settings.error,
templates = settings.templates,
eventNamespace = '.' + namespace,
moduleNamespace = 'module-' + namespace,
$module = $(this),
$context = $(settings.context),
$text = $module.find(selector.text),
$search = $module.find(selector.search),
$sizer = $module.find(selector.sizer),
$input = $module.find(selector.input),
$icon = $module.find(selector.icon),
$combo = ($module.prev().find(selector.text).length > 0)
? $module.prev().find(selector.text)
: $module.prev(),
$menu = $module.children(selector.menu),
$item = $menu.find(selector.item),
activated = false,
itemActivated = false,
internalChange = false,
element = this,
instance = $module.data(moduleNamespace),
initialLoad,
pageLostFocus,
willRefocus,
elementNamespace,
id,
selectObserver,
menuObserver,
module
;
module = {
initialize: function() {
module.debug('Initializing dropdown', settings);
if( module.is.alreadySetup() ) {
module.setup.reference();
}
else {
module.setup.layout();
if(settings.values) {
module.change.values(settings.values);
}
module.refreshData();
module.save.defaults();
module.restore.selected();
module.create.id();
module.bind.events();
module.observeChanges();
module.instantiate();
}
},
instantiate: function() {
module.verbose('Storing instance of dropdown', module);
instance = module;
$module
.data(moduleNamespace, module)
;
},
destroy: function() {
module.verbose('Destroying previous dropdown', $module);
module.remove.tabbable();
$module
.off(eventNamespace)
.removeData(moduleNamespace)
;
$menu
.off(eventNamespace)
;
$document
.off(elementNamespace)
;
module.disconnect.menuObserver();
module.disconnect.selectObserver();
},
observeChanges: function() {
if('MutationObserver' in window) {
selectObserver = new MutationObserver(module.event.select.mutation);
menuObserver = new MutationObserver(module.event.menu.mutation);
module.debug('Setting up mutation observer', selectObserver, menuObserver);
module.observe.select();
module.observe.menu();
}
},
disconnect: {
menuObserver: function() {
if(menuObserver) {
menuObserver.disconnect();
}
},
selectObserver: function() {
if(selectObserver) {
selectObserver.disconnect();
}
}
},
observe: {
select: function() {
if(module.has.input()) {
selectObserver.observe($module[0], {
childList : true,
subtree : true
});
}
},
menu: function() {
if(module.has.menu()) {
menuObserver.observe($menu[0], {
childList : true,
subtree : true
});
}
}
},
create: {
id: function() {
id = (Math.random().toString(16) + '000000000').substr(2, 8);
elementNamespace = '.' + id;
module.verbose('Creating unique id for element', id);
},
userChoice: function(values) {
var
$userChoices,
$userChoice,
isUserValue,
html
;
values = values || module.get.userValues();
if(!values) {
return false;
}
values = $.isArray(values)
? values
: [values]
;
$.each(values, function(index, value) {
if(module.get.item(value) === false) {
html = settings.templates.addition( module.add.variables(message.addResult, value) );
$userChoice = $('<div />')
.html(html)
.attr('data-' + metadata.value, value)
.attr('data-' + metadata.text, value)
.addClass(className.addition)
.addClass(className.item)
;
if(settings.hideAdditions) {
$userChoice.addClass(className.hidden);
}
$userChoices = ($userChoices === undefined)
? $userChoice
: $userChoices.add($userChoice)
;
module.verbose('Creating user choices for value', value, $userChoice);
}
});
return $userChoices;
},
userLabels: function(value) {
var
userValues = module.get.userValues()
;
if(userValues) {
module.debug('Adding user labels', userValues);
$.each(userValues, function(index, value) {
module.verbose('Adding custom user value');
module.add.label(value, value);
});
}
},
menu: function() {
$menu = $('<div />')
.addClass(className.menu)
.appendTo($module)
;
},
sizer: function() {
$sizer = $('<span />')
.addClass(className.sizer)
.insertAfter($search)
;
}
},
search: function(query) {
query = (query !== undefined)
? query
: module.get.query()
;
module.verbose('Searching for query', query);
if(module.has.minCharacters(query)) {
module.filter(query);
}
else {
module.hide();
}
},
select: {
firstUnfiltered: function() {
module.verbose('Selecting first non-filtered element');
module.remove.selectedItem();
$item
.not(selector.unselectable)
.not(selector.addition + selector.hidden)
.eq(0)
.addClass(className.selected)
;
},
nextAvailable: function($selected) {
$selected = $selected.eq(0);
var
$nextAvailable = $selected.nextAll(selector.item).not(selector.unselectable).eq(0),
$prevAvailable = $selected.prevAll(selector.item).not(selector.unselectable).eq(0),
hasNext = ($nextAvailable.length > 0)
;
if(hasNext) {
module.verbose('Moving selection to', $nextAvailable);
$nextAvailable.addClass(className.selected);
}
else {
module.verbose('Moving selection to', $prevAvailable);
$prevAvailable.addClass(className.selected);
}
}
},
setup: {
api: function() {
var
apiSettings = {
debug : settings.debug,
urlData : {
value : module.get.value(),
query : module.get.query()
},
on : false
}
;
module.verbose('First request, initializing API');
$module
.api(apiSettings)
;
},
layout: function() {
if( $module.is('select') ) {
module.setup.select();
module.setup.returnedObject();
}
if( !module.has.menu() ) {
module.create.menu();
}
if( module.is.search() && !module.has.search() ) {
module.verbose('Adding search input');
$search = $('<input />')
.addClass(className.search)
.prop('autocomplete', 'off')
.insertBefore($text)
;
}
if( module.is.multiple() && module.is.searchSelection() && !module.has.sizer()) {
module.create.sizer();
}
if(settings.allowTab) {
module.set.tabbable();
}
},
select: function() {
var
selectValues = module.get.selectValues()
;
module.debug('Dropdown initialized on a select', selectValues);
if( $module.is('select') ) {
$input = $module;
}
// see if select is placed correctly already
if($input.parent(selector.dropdown).length > 0) {
module.debug('UI dropdown already exists. Creating dropdown menu only');
$module = $input.closest(selector.dropdown);
if( !module.has.menu() ) {
module.create.menu();
}
$menu = $module.children(selector.menu);
module.setup.menu(selectValues);
}
else {
module.debug('Creating entire dropdown from select');
$module = $('<div />')
.attr('class', $input.attr('class') )
.addClass(className.selection)
.addClass(className.dropdown)
.html( templates.dropdown(selectValues) )
.insertBefore($input)
;
if($input.hasClass(className.multiple) && $input.prop('multiple') === false) {
module.error(error.missingMultiple);
$input.prop('multiple', true);
}
if($input.is('[multiple]')) {
module.set.multiple();
}
if ($input.prop('disabled')) {
module.debug('Disabling dropdown');
$module.addClass(className.disabled);
}
$input
.removeAttr('class')
.detach()
.prependTo($module)
;
}
module.refresh();
},
menu: function(values) {
$menu.html( templates.menu(values, fields));
$item = $menu.find(selector.item);
},
reference: function() {
module.debug('Dropdown behavior was called on select, replacing with closest dropdown');
// replace module reference
$module = $module.parent(selector.dropdown);
instance = $module.data(moduleNamespace);
element = $module.get(0);
module.refresh();
module.setup.returnedObject();
},
returnedObject: function() {
var
$firstModules = $allModules.slice(0, elementIndex),
$lastModules = $allModules.slice(elementIndex + 1)
;
// adjust all modules to use correct reference
$allModules = $firstModules.add($module).add($lastModules);
}
},
refresh: function() {
module.refreshSelectors();
module.refreshData();
},
refreshItems: function() {
$item = $menu.find(selector.item);
},
refreshSelectors: function() {
module.verbose('Refreshing selector cache');
$text = $module.find(selector.text);
$search = $module.find(selector.search);
$input = $module.find(selector.input);
$icon = $module.find(selector.icon);
$combo = ($module.prev().find(selector.text).length > 0)
? $module.prev().find(selector.text)
: $module.prev()
;
$menu = $module.children(selector.menu);
$item = $menu.find(selector.item);
},
refreshData: function() {
module.verbose('Refreshing cached metadata');
$item
.removeData(metadata.text)
.removeData(metadata.value)
;
},
clearData: function() {
module.verbose('Clearing metadata');
$item
.removeData(metadata.text)
.removeData(metadata.value)
;
$module
.removeData(metadata.defaultText)
.removeData(metadata.defaultValue)
.removeData(metadata.placeholderText)
;
},
toggle: function() {
module.verbose('Toggling menu visibility');
if( !module.is.active() ) {
module.show();
}
else {
module.hide();
}
},
show: function(callback) {
callback = $.isFunction(callback)
? callback
: function(){}
;
if(!module.can.show() && module.is.remote()) {
module.debug('No API results retrieved, searching before show');
module.queryRemote(module.get.query(), module.show);
}
if( module.can.show() && !module.is.active() ) {
module.debug('Showing dropdown');
if(module.has.message() && !(module.has.maxSelections() || module.has.allResultsFiltered()) ) {
module.remove.message();
}
if(module.is.allFiltered()) {
return true;
}
if(settings.onShow.call(element) !== false) {
module.animate.show(function() {
if( module.can.click() ) {
module.bind.intent();
}
if(module.has.menuSearch()) {
module.focusSearch();
}
module.set.visible();
callback.call(element);
});
}
}
},
hide: function(callback) {
callback = $.isFunction(callback)
? callback
: function(){}
;
if( module.is.active() && !module.is.animatingOutward() ) {
module.debug('Hiding dropdown');
if(settings.onHide.call(element) !== false) {
module.animate.hide(function() {
module.remove.visible();
callback.call(element);
});
}
}
},
hideOthers: function() {
module.verbose('Finding other dropdowns to hide');
$allModules
.not($module)
.has(selector.menu + '.' + className.visible)
.dropdown('hide')
;
},
hideMenu: function() {
module.verbose('Hiding menu instantaneously');
module.remove.active();
module.remove.visible();
$menu.transition('hide');
},
hideSubMenus: function() {
var
$subMenus = $menu.children(selector.item).find(selector.menu)
;
module.verbose('Hiding sub menus', $subMenus);
$subMenus.transition('hide');
},
bind: {
events: function() {
if(hasTouch) {
module.bind.touchEvents();
}
module.bind.keyboardEvents();
module.bind.inputEvents();
module.bind.mouseEvents();
},
touchEvents: function() {
module.debug('Touch device detected binding additional touch events');
if( module.is.searchSelection() ) {
// do nothing special yet
}
else if( module.is.single() ) {
$module
.on('touchstart' + eventNamespace, module.event.test.toggle)
;
}
$menu
.on('touchstart' + eventNamespace, selector.item, module.event.item.mouseenter)
;
},
keyboardEvents: function() {
module.verbose('Binding keyboard events');
$module
.on('keydown' + eventNamespace, module.event.keydown)
;
if( module.has.search() ) {
$module
.on(module.get.inputEvent() + eventNamespace, selector.search, module.event.input)
;
}
if( module.is.multiple() ) {
$document
.on('keydown' + elementNamespace, module.event.document.keydown)
;
}
},
inputEvents: function() {
module.verbose('Binding input change events');
$module
.on('change' + eventNamespace, selector.input, module.event.change)
;
},
mouseEvents: function() {
module.verbose('Binding mouse events');
if(module.is.multiple()) {
$module
.on('click' + eventNamespace, selector.label, module.event.label.click)
.on('click' + eventNamespace, selector.remove, module.event.remove.click)
;
}
if( module.is.searchSelection() ) {
$module
.on('mousedown' + eventNamespace, module.event.mousedown)
.on('mouseup' + eventNamespace, module.event.mouseup)
.on('mousedown' + eventNamespace, selector.menu, module.event.menu.mousedown)
.on('mouseup' + eventNamespace, selector.menu, module.event.menu.mouseup)
.on('click' + eventNamespace, selector.icon, module.event.icon.click)
.on('focus' + eventNamespace, selector.search, module.event.search.focus)
.on('click' + eventNamespace, selector.search, module.event.search.focus)
.on('blur' + eventNamespace, selector.search, module.event.search.blur)
.on('click' + eventNamespace, selector.text, module.event.text.focus)
;
if(module.is.multiple()) {
$module
.on('click' + eventNamespace, module.event.click)
;
}
}
else {
if(settings.on == 'click') {
$module
.on('click' + eventNamespace, module.event.test.toggle)
;
}
else if(settings.on == 'hover') {
$module
.on('mouseenter' + eventNamespace, module.delay.show)
.on('mouseleave' + eventNamespace, module.delay.hide)
;
}
else {
$module
.on(settings.on + eventNamespace, module.toggle)
;
}
$module
.on('click' + eventNamespace, selector.icon, module.event.icon.click)
.on('mousedown' + eventNamespace, module.event.mousedown)
.on('mouseup' + eventNamespace, module.event.mouseup)
.on('focus' + eventNamespace, module.event.focus)
;
if(module.has.menuSearch() ) {
$module
.on('blur' + eventNamespace, selector.search, module.event.search.blur)
;
}
else {
$module
.on('blur' + eventNamespace, module.event.blur)
;
}
}
$menu
.on('mouseenter' + eventNamespace, selector.item, module.event.item.mouseenter)
.on('mouseleave' + eventNamespace, selector.item, module.event.item.mouseleave)
.on('click' + eventNamespace, selector.item, module.event.item.click)
;
},
intent: function() {
module.verbose('Binding hide intent event to document');
if(hasTouch) {
$document
.on('touchstart' + elementNamespace, module.event.test.touch)
.on('touchmove' + elementNamespace, module.event.test.touch)
;
}
$document
.on('click' + elementNamespace, module.event.test.hide)
;
}
},
unbind: {
intent: function() {
module.verbose('Removing hide intent event from document');
if(hasTouch) {
$document
.off('touchstart' + elementNamespace)
.off('touchmove' + elementNamespace)
;
}
$document
.off('click' + elementNamespace)
;
}
},
filter: function(query) {
var
searchTerm = (query !== undefined)
? query
: module.get.query(),
afterFiltered = function() {
if(module.is.multiple()) {
module.filterActive();
}
if(query || (!query && module.get.activeItem().length == 0)) {
module.select.firstUnfiltered();
}
if( module.has.allResultsFiltered() ) {
if( settings.onNoResults.call(element, searchTerm) ) {
if(settings.allowAdditions) {
if(settings.hideAdditions) {
module.verbose('User addition with no menu, setting empty style');
module.set.empty();
module.hideMenu();
}
}
else {
module.verbose('All items filtered, showing message', searchTerm);
module.add.message(message.noResults);
}
}
else {
module.verbose('All items filtered, hiding dropdown', searchTerm);
module.hideMenu();
}
}
else {
module.remove.empty();
module.remove.message();
}
if(settings.allowAdditions) {
module.add.userSuggestion(query);
}
if(module.is.searchSelection() && module.can.show() && module.is.focusedOnSearch() ) {
module.show();
}
}
;
if(settings.useLabels && module.has.maxSelections()) {
return;
}
if(settings.apiSettings) {
if( module.can.useAPI() ) {
module.queryRemote(searchTerm, function() {
if(settings.filterRemoteData) {
module.filterItems(searchTerm);
}
afterFiltered();
});
}
else {
module.error(error.noAPI);
}
}
else {
module.filterItems(searchTerm);
afterFiltered();
}
},
queryRemote: function(query, callback) {
var
apiSettings = {
errorDuration : false,
cache : 'local',
throttle : settings.throttle,
urlData : {
query: query
},
onError: function() {
module.add.message(message.serverError);
callback();
},
onFailure: function() {
module.add.message(message.serverError);
callback();
},
onSuccess : function(response) {
var
values = response[fields.remoteValues],
hasRemoteValues = ($.isArray(values) && values.length > 0)
;
if(hasRemoteValues) {
module.remove.message();
module.setup.menu({
values: response[fields.remoteValues]
});
}
else {
module.add.message(message.noResults);
}
callback();
}
}
;
if( !$module.api('get request') ) {
module.setup.api();
}
apiSettings = $.extend(true, {}, apiSettings, settings.apiSettings);
$module
.api('setting', apiSettings)
.api('query')
;
},
filterItems: function(query) {
var
searchTerm = (query !== undefined)
? query
: module.get.query(),
results = null,
escapedTerm = module.escape.string(searchTerm),
beginsWithRegExp = new RegExp('^' + escapedTerm, 'igm')
;
// avoid loop if we're matching nothing
if( module.has.query() ) {
results = [];
module.verbose('Searching for matching values', searchTerm);
$item
.each(function(){
var
$choice = $(this),
text,
value
;
if(settings.match == 'both' || settings.match == 'text') {
text = String(module.get.choiceText($choice, false));
if(text.search(beginsWithRegExp) !== -1) {
results.push(this);
return true;
}
else if (settings.fullTextSearch === 'exact' && module.exactSearch(searchTerm, text)) {
results.push(this);
return true;
}
else if (settings.fullTextSearch === true && module.fuzzySearch(searchTerm, text)) {
results.push(this);
return true;
}
}
if(settings.match == 'both' || settings.match == 'value') {
value = String(module.get.choiceValue($choice, text));
if(value.search(beginsWithRegExp) !== -1) {
results.push(this);
return true;
}
else if (settings.fullTextSearch === 'exact' && module.exactSearch(searchTerm, value)) {
results.push(this);
return true;
}
else if (settings.fullTextSearch === true && module.fuzzySearch(searchTerm, value)) {
results.push(this);
return true;
}
}
})
;
}
module.debug('Showing only matched items', searchTerm);
module.remove.filteredItem();
if(results) {
$item
.not(results)
.addClass(className.filtered)
;
}
},
fuzzySearch: function(query, term) {
var
termLength = term.length,
queryLength = query.length
;
query = query.toLowerCase();
term = term.toLowerCase();
if(queryLength > termLength) {
return false;
}
if(queryLength === termLength) {
return (query === term);
}
search: for (var characterIndex = 0, nextCharacterIndex = 0; characterIndex < queryLength; characterIndex++) {
var
queryCharacter = query.charCodeAt(characterIndex)
;
while(nextCharacterIndex < termLength) {
if(term.charCodeAt(nextCharacterIndex++) === queryCharacter) {
continue search;
}
}
return false;
}
return true;
},
exactSearch: function (query, term) {
query = query.toLowerCase();
term = term.toLowerCase();
if(term.indexOf(query) > -1) {
return true;
}
return false;
},
filterActive: function() {
if(settings.useLabels) {
$item.filter('.' + className.active)
.addClass(className.filtered)
;
}
},
focusSearch: function(skipHandler) {
if( module.has.search() && !module.is.focusedOnSearch() ) {
if(skipHandler) {
$module.off('focus' + eventNamespace, selector.search);
$search.focus();
$module.on('focus' + eventNamespace, selector.search, module.event.search.focus);
}
else {
$search.focus();
}
}
},
forceSelection: function() {
var
$currentlySelected = $item.not(className.filtered).filter('.' + className.selected).eq(0),
$activeItem = $item.not(className.filtered).filter('.' + className.active).eq(0),
$selectedItem = ($currentlySelected.length > 0)
? $currentlySelected
: $activeItem,
hasSelected = ($selectedItem.length > 0)
;
if(hasSelected && !module.is.multiple()) {
module.debug('Forcing partial selection to selected item', $selectedItem);
module.event.item.click.call($selectedItem, {}, true);
return;
}
else {
if(settings.allowAdditions) {
module.set.selected(module.get.query());
module.remove.searchTerm();
}
else {
module.remove.searchTerm();
}
}
},
change: {
values: function(values) {
if(!settings.allowAdditions) {
module.clear();
}
module.debug('Creating dropdown with specified values', values);
module.setup.menu({values: values});
$.each(values, function(index, item) {
if(item.selected == true) {
module.debug('Setting initial selection to', item.value);
module.set.selected(item.value);
return true;
}
});
}
},
event: {
change: function() {
if(!internalChange) {
module.debug('Input changed, updating selection');
module.set.selected();
}
},
focus: function() {
if(settings.showOnFocus && !activated && module.is.hidden() && !pageLostFocus) {
module.show();
}
},
blur: function(event) {
pageLostFocus = (document.activeElement === this);
if(!activated && !pageLostFocus) {
module.remove.activeLabel();
module.hide();
}
},
mousedown: function() {
if(module.is.searchSelection()) {
// prevent menu hiding on immediate re-focus
willRefocus = true;
}
else {
// prevents focus callback from occurring on mousedown
activated = true;
}
},
mouseup: function() {
if(module.is.searchSelection()) {
// prevent menu hiding on immediate re-focus
willRefocus = false;
}
else {
activated = false;
}
},
click: function(event) {
var
$target = $(event.target)
;
// focus search
if($target.is($module)) {
if(!module.is.focusedOnSearch()) {
module.focusSearch();
}
else {
module.show();
}
}
},
search: {
focus: function() {
activated = true;
if(module.is.multiple()) {
module.remove.activeLabel();
}
if(settings.showOnFocus) {
module.search();
}
},
blur: function(event) {
pageLostFocus = (document.activeElement === this);
if(module.is.searchSelection() && !willRefocus) {
if(!itemActivated && !pageLostFocus) {
if(settings.forceSelection) {
module.forceSelection();
}
module.hide();
}
}
willRefocus = false;
}
},
icon: {
click: function(event) {
if($icon.hasClass(className.clear)) {
module.clear();
}
else if (module.can.click()) {
module.toggle();
}
}
},
text: {
focus: function(event) {
activated = true;
module.focusSearch();
}
},
input: function(event) {
if(module.is.multiple() || module.is.searchSelection()) {
module.set.filtered();
}
clearTimeout(module.timer);
module.timer = setTimeout(module.search, settings.delay.search);
},
label: {
click: function(event) {
var
$label = $(this),
$labels = $module.find(selector.label),
$activeLabels = $labels.filter('.' + className.active),
$nextActive = $label.nextAll('.' + className.active),
$prevActive = $label.prevAll('.' + className.active),
$range = ($nextActive.length > 0)
? $label.nextUntil($nextActive).add($activeLabels).add($label)
: $label.prevUntil($prevActive).add($activeLabels).add($label)
;
if(event.shiftKey) {
$activeLabels.removeClass(className.active);
$range.addClass(className.active);
}
else if(event.ctrlKey) {
$label.toggleClass(className.active);
}
else {
$activeLabels.removeClass(className.active);
$label.addClass(className.active);
}
settings.onLabelSelect.apply(this, $labels.filter('.' + className.active));
}
},
remove: {
click: function() {
var
$label = $(this).parent()
;
if( $label.hasClass(className.active) ) {
// remove all selected labels
module.remove.activeLabels();
}
else {
// remove this label only
module.remove.activeLabels( $label );
}
}
},
test: {
toggle: function(event) {
var
toggleBehavior = (module.is.multiple())
? module.show
: module.toggle
;
if(module.is.bubbledLabelClick(event) || module.is.bubbledIconClick(event)) {
return;
}
if( module.determine.eventOnElement(event, toggleBehavior) ) {
event.preventDefault();
}
},
touch: function(event) {
module.determine.eventOnElement(event, function() {
if(event.type == 'touchstart') {
module.timer = setTimeout(function() {
module.hide();
}, settings.delay.touch);
}
else if(event.type == 'touchmove') {
clearTimeout(module.timer);
}
});
event.stopPropagation();
},
hide: function(event) {
module.determine.eventInModule(event, module.hide);
}
},
select: {
mutation: function(mutations) {
module.debug('<select> modified, recreating menu');
var
isSelectMutation = false
;
$.each(mutations, function(index, mutation) {
if($(mutation.target).is('select') || $(mutation.addedNodes).is('select')) {
isSelectMutation = true;
return true;
}
});
if(isSelectMutation) {
module.disconnect.selectObserver();
module.refresh();
module.setup.select();
module.set.selected();
module.observe.select();
}
}
},
menu: {
mutation: function(mutations) {
var
mutation = mutations[0],
$addedNode = mutation.addedNodes
? $(mutation.addedNodes[0])
: $(false),
$removedNode = mutation.removedNodes
? $(mutation.removedNodes[0])
: $(false),
$changedNodes = $addedNode.add($removedNode),
isUserAddition = $changedNodes.is(selector.addition) || $changedNodes.closest(selector.addition).length > 0,
isMessage = $changedNodes.is(selector.message) || $changedNodes.closest(selector.message).length > 0
;
if(isUserAddition || isMessage) {
module.debug('Updating item selector cache');
module.refreshItems();
}
else {
module.debug('Menu modified, updating selector cache');
module.refresh();
}
},
mousedown: function() {
itemActivated = true;
},
mouseup: function() {
itemActivated = false;
}
},
item: {
mouseenter: function(event) {
var
$target = $(event.target),
$item = $(this),
$subMenu = $item.children(selector.menu),
$otherMenus = $item.siblings(selector.item).children(selector.menu),
hasSubMenu = ($subMenu.length > 0),
isBubbledEvent = ($subMenu.find($target).length > 0)
;
if( !isBubbledEvent && hasSubMenu ) {
clearTimeout(module.itemTimer);
module.itemTimer = setTimeout(function() {
module.verbose('Showing sub-menu', $subMenu);
$.each($otherMenus, function() {
module.animate.hide(false, $(this));
});
module.animate.show(false, $subMenu);
}, settings.delay.show);
event.preventDefault();
}
},
mouseleave: function(event) {
var
$subMenu = $(this).children(selector.menu)
;
if($subMenu.length > 0) {
clearTimeout(module.itemTimer);
module.itemTimer = setTimeout(function() {
module.verbose('Hiding sub-menu', $subMenu);
module.animate.hide(false, $subMenu);
}, settings.delay.hide);
}
},
click: function (event, skipRefocus) {
var
$choice = $(this),
$target = (event)
? $(event.target)
: $(''),
$subMenu = $choice.find(selector.menu),
text = module.get.choiceText($choice),
value = module.get.choiceValue($choice, text),
hasSubMenu = ($subMenu.length > 0),
isBubbledEvent = ($subMenu.find($target).length > 0)
;
// prevents IE11 bug where menu receives focus even though `tabindex=-1`
if(module.has.menuSearch()) {
$(document.activeElement).blur();
}
if(!isBubbledEvent && (!hasSubMenu || settings.allowCategorySelection)) {
if(module.is.searchSelection()) {
if(settings.allowAdditions) {
module.remove.userAddition();
}
module.remove.searchTerm();
if(!module.is.focusedOnSearch() && !(skipRefocus == true)) {
module.focusSearch(true);
}
}
if(!settings.useLabels) {
module.remove.filteredItem();
module.set.scrollPosition($choice);
}
module.determine.selectAction.call(this, text, value);
}
}
},
document: {
// label selection should occur even when element has no focus
keydown: function(event) {
var
pressedKey = event.which,
isShortcutKey = module.is.inObject(pressedKey, keys)
;
if(isShortcutKey) {
var
$label = $module.find(selector.label),
$activeLabel = $label.filter('.' + className.active),
activeValue = $activeLabel.data(metadata.value),
labelIndex = $label.index($activeLabel),
labelCount = $label.length,
hasActiveLabel = ($activeLabel.length > 0),
hasMultipleActive = ($activeLabel.length > 1),
isFirstLabel = (labelIndex === 0),
isLastLabel = (labelIndex + 1 == labelCount),
isSearch = module.is.searchSelection(),
isFocusedOnSearch = module.is.focusedOnSearch(),
isFocused = module.is.focused(),
caretAtStart = (isFocusedOnSearch && module.get.caretPosition() === 0),
$nextLabel
;
if(isSearch && !hasActiveLabel && !isFocusedOnSearch) {
return;
}
if(pressedKey == keys.leftArrow) {
// activate previous label
if((isFocused || caretAtStart) && !hasActiveLabel) {
module.verbose('Selecting previous label');
$label.last().addClass(className.active);
}
else if(hasActiveLabel) {
if(!event.shiftKey) {
module.verbose('Selecting previous label');
$label.removeClass(className.active);
}
else {
module.verbose('Adding previous label to selection');
}
if(isFirstLabel && !hasMultipleActive) {
$activeLabel.addClass(className.active);
}
else {
$activeLabel.prev(selector.siblingLabel)
.addClass(className.active)
.end()
;
}
event.preventDefault();
}
}
else if(pressedKey == keys.rightArrow) {
// activate first label
if(isFocused && !hasActiveLabel) {
$label.first().addClass(className.active);
}
// activate next label
if(hasActiveLabel) {
if(!event.shiftKey) {
module.verbose('Selecting next label');
$label.removeClass(className.active);
}
else {
module.verbose('Adding next label to selection');
}
if(isLastLabel) {
if(isSearch) {
if(!isFocusedOnSearch) {
module.focusSearch();
}
else {
$label.removeClass(className.active);
}
}
else if(hasMultipleActive) {
$activeLabel.next(selector.siblingLabel).addClass(className.active);
}
else {
$activeLabel.addClass(className.active);
}
}
else {
$activeLabel.next(selector.siblingLabel).addClass(className.active);
}
event.preventDefault();
}
}
else if(pressedKey == keys.deleteKey || pressedKey == keys.backspace) {
if(hasActiveLabel) {
module.verbose('Removing active labels');
if(isLastLabel) {
if(isSearch && !isFocusedOnSearch) {
module.focusSearch();
}
}
$activeLabel.last().next(selector.siblingLabel).addClass(className.active);
module.remove.activeLabels($activeLabel);
event.preventDefault();
}
else if(caretAtStart && !hasActiveLabel && pressedKey == keys.backspace) {
module.verbose('Removing last label on input backspace');
$activeLabel = $label.last().addClass(className.active);
module.remove.activeLabels($activeLabel);
}
}
else {
$activeLabel.removeClass(className.active);
}
}
}
},
keydown: function(event) {
var
pressedKey = event.which,
isShortcutKey = module.is.inObject(pressedKey, keys)
;
if(isShortcutKey) {
var
$currentlySelected = $item.not(selector.unselectable).filter('.' + className.selected).eq(0),
$activeItem = $menu.children('.' + className.active).eq(0),
$selectedItem = ($currentlySelected.length > 0)
? $currentlySelected
: $activeItem,
$visibleItems = ($selectedItem.length > 0)
? $selectedItem.siblings(':not(.' + className.filtered +')').addBack()
: $menu.children(':not(.' + className.filtered +')'),
$subMenu = $selectedItem.children(selector.menu),
$parentMenu = $selectedItem.closest(selector.menu),
inVisibleMenu = ($parentMenu.hasClass(className.visible) || $parentMenu.hasClass(className.animating) || $parentMenu.parent(selector.menu).length > 0),
hasSubMenu = ($subMenu.length> 0),
hasSelectedItem = ($selectedItem.length > 0),
selectedIsSelectable = ($selectedItem.not(selector.unselectable).length > 0),
delimiterPressed = (pressedKey == keys.delimiter && settings.allowAdditions && module.is.multiple()),
isAdditionWithoutMenu = (settings.allowAdditions && settings.hideAdditions && (pressedKey == keys.enter || delimiterPressed) && selectedIsSelectable),
$nextItem,
isSubMenuItem,
newIndex
;
// allow selection with menu closed
if(isAdditionWithoutMenu) {
module.verbose('Selecting item from keyboard shortcut', $selectedItem);
module.event.item.click.call($selectedItem, event);
if(module.is.searchSelection()) {
module.remove.searchTerm();
}
}
// visible menu keyboard shortcuts
if( module.is.visible() ) {
// enter (select or open sub-menu)
if(pressedKey == keys.enter || delimiterPressed) {
if(pressedKey == keys.enter && hasSelectedItem && hasSubMenu && !settings.allowCategorySelection) {
module.verbose('Pressed enter on unselectable category, opening sub menu');
pressedKey = keys.rightArrow;
}
else if(selectedIsSelectable) {
module.verbose('Selecting item from keyboard shortcut', $selectedItem);
module.event.item.click.call($selectedItem, event);
if(module.is.searchSelection()) {
module.remove.searchTerm();
}
}
event.preventDefault();
}
// sub-menu actions
if(hasSelectedItem) {
if(pressedKey == keys.leftArrow) {
isSubMenuItem = ($parentMenu[0] !== $menu[0]);
if(isSubMenuItem) {
module.verbose('Left key pressed, closing sub-menu');
module.animate.hide(false, $parentMenu);
$selectedItem
.removeClass(className.selected)
;
$parentMenu
.closest(selector.item)
.addClass(className.selected)
;
event.preventDefault();
}
}
// right arrow (show sub-menu)
if(pressedKey == keys.rightArrow) {
if(hasSubMenu) {
module.verbose('Right key pressed, opening sub-menu');
module.animate.show(false, $subMenu);
$selectedItem
.removeClass(className.selected)
;
$subMenu
.find(selector.item).eq(0)
.addClass(className.selected)
;
event.preventDefault();
}
}
}
// up arrow (traverse menu up)
if(pressedKey == keys.upArrow) {
$nextItem = (hasSelectedItem && inVisibleMenu)
? $selectedItem.prevAll(selector.item + ':not(' + selector.unselectable + ')').eq(0)
: $item.eq(0)
;
if($visibleItems.index( $nextItem ) < 0) {
module.verbose('Up key pressed but reached top of current menu');
event.preventDefault();
return;
}
else {
module.verbose('Up key pressed, changing active item');
$selectedItem
.removeClass(className.selected)
;
$nextItem
.addClass(className.selected)
;
module.set.scrollPosition($nextItem);
if(settings.selectOnKeydown && module.is.single()) {
module.set.selectedItem($nextItem);
}
}
event.preventDefault();
}
// down arrow (traverse menu down)
if(pressedKey == keys.downArrow) {
$nextItem = (hasSelectedItem && inVisibleMenu)
? $nextItem = $selectedItem.nextAll(selector.item + ':not(' + selector.unselectable + ')').eq(0)
: $item.eq(0)
;
if($nextItem.length === 0) {
module.verbose('Down key pressed but reached bottom of current menu');
event.preventDefault();
return;
}
else {
module.verbose('Down key pressed, changing active item');
$item
.removeClass(className.selected)
;
$nextItem
.addClass(className.selected)
;
module.set.scrollPosition($nextItem);
if(settings.selectOnKeydown && module.is.single()) {
module.set.selectedItem($nextItem);
}
}
event.preventDefault();
}
// page down (show next page)
if(pressedKey == keys.pageUp) {
module.scrollPage('up');
event.preventDefault();
}
if(pressedKey == keys.pageDown) {
module.scrollPage('down');
event.preventDefault();
}
// escape (close menu)
if(pressedKey == keys.escape) {
module.verbose('Escape key pressed, closing dropdown');
module.hide();
}
}
else {
// delimiter key
if(delimiterPressed) {
event.preventDefault();
}
// down arrow (open menu)
if(pressedKey == keys.downArrow && !module.is.visible()) {
module.verbose('Down key pressed, showing dropdown');
module.show();
event.preventDefault();
}
}
}
else {
if( !module.has.search() ) {
module.set.selectedLetter( String.fromCharCode(pressedKey) );
}
}
}
},
trigger: {
change: function() {
var
events = document.createEvent('HTMLEvents'),
inputElement = $input[0]
;
if(inputElement) {
module.verbose('Triggering native change event');
events.initEvent('change', true, false);
inputElement.dispatchEvent(events);
}
}
},
determine: {
selectAction: function(text, value) {
module.verbose('Determining action', settings.action);
if( $.isFunction( module.action[settings.action] ) ) {
module.verbose('Triggering preset action', settings.action, text, value);
module.action[ settings.action ].call(element, text, value, this);
}
else if( $.isFunction(settings.action) ) {
module.verbose('Triggering user action', settings.action, text, value);
settings.action.call(element, text, value, this);
}
else {
module.error(error.action, settings.action);
}
},
eventInModule: function(event, callback) {
var
$target = $(event.target),
inDocument = ($target.closest(document.documentElement).length > 0),
inModule = ($target.closest($module).length > 0)
;
callback = $.isFunction(callback)
? callback
: function(){}
;
if(inDocument && !inModule) {
module.verbose('Triggering event', callback);
callback();
return true;
}
else {
module.verbose('Event occurred in dropdown, canceling callback');
return false;
}
},
eventOnElement: function(event, callback) {
var
$target = $(event.target),
$label = $target.closest(selector.siblingLabel),
inVisibleDOM = document.body.contains(event.target),
notOnLabel = ($module.find($label).length === 0),
notInMenu = ($target.closest($menu).length === 0)
;
callback = $.isFunction(callback)
? callback
: function(){}
;
if(inVisibleDOM && notOnLabel && notInMenu) {
module.verbose('Triggering event', callback);
callback();
return true;
}
else {
module.verbose('Event occurred in dropdown menu, canceling callback');
return false;
}
}
},
action: {
nothing: function() {},
activate: function(text, value, element) {
value = (value !== undefined)
? value
: text
;
if( module.can.activate( $(element) ) ) {
module.set.selected(value, $(element));
if(module.is.multiple() && !module.is.allFiltered()) {
return;
}
else {
module.hideAndClear();
}
}
},
select: function(text, value, element) {
value = (value !== undefined)
? value
: text
;
if( module.can.activate( $(element) ) ) {
module.set.value(value, text, $(element));
if(module.is.multiple() && !module.is.allFiltered()) {
return;
}
else {
module.hideAndClear();
}
}
},
combo: function(text, value, element) {
value = (value !== undefined)
? value
: text
;
module.set.selected(value, $(element));
module.hideAndClear();
},
hide: function(text, value, element) {
module.set.value(value, text, $(element));
module.hideAndClear();
}
},
get: {
id: function() {
return id;
},
defaultText: function() {
return $module.data(metadata.defaultText);
},
defaultValue: function() {
return $module.data(metadata.defaultValue);
},
placeholderText: function() {
if(settings.placeholder != 'auto' && typeof settings.placeholder == 'string') {
return settings.placeholder;
}
return $module.data(metadata.placeholderText) || '';
},
text: function() {
return $text.text();
},
query: function() {
return $.trim($search.val());
},
searchWidth: function(value) {
value = (value !== undefined)
? value
: $search.val()
;
$sizer.text(value);
// prevent rounding issues
return Math.ceil( $sizer.width() + 1);
},
selectionCount: function() {
var
values = module.get.values(),
count
;
count = ( module.is.multiple() )
? $.isArray(values)
? values.length
: 0
: (module.get.value() !== '')
? 1
: 0
;
return count;
},
transition: function($subMenu) {
return (settings.transition == 'auto')
? module.is.upward($subMenu)
? 'slide up'
: 'slide down'
: settings.transition
;
},
userValues: function() {
var
values = module.get.values()
;
if(!values) {
return false;
}
values = $.isArray(values)
? values
: [values]
;
return $.grep(values, function(value) {
return (module.get.item(value) === false);
});
},
uniqueArray: function(array) {
return $.grep(array, function (value, index) {
return $.inArray(value, array) === index;
});
},
caretPosition: function() {
var
input = $search.get(0),
range,
rangeLength
;
if('selectionStart' in input) {
return input.selectionStart;
}
else if (document.selection) {
input.focus();
range = document.selection.createRange();
rangeLength = range.text.length;
range.moveStart('character', -input.value.length);
return range.text.length - rangeLength;
}
},
value: function() {
var
value = ($input.length > 0)
? $input.val()
: $module.data(metadata.value),
isEmptyMultiselect = ($.isArray(value) && value.length === 1 && value[0] === '')
;
// prevents placeholder element from being selected when multiple
return (value === undefined || isEmptyMultiselect)
? ''
: value
;
},
values: function() {
var
value = module.get.value()
;
if(value === '') {
return '';
}
return ( !module.has.selectInput() && module.is.multiple() )
? (typeof value == 'string') // delimited string
? value.split(settings.delimiter)
: ''
: value
;
},
remoteValues: function() {
var
values = module.get.values(),
remoteValues = false
;
if(values) {
if(typeof values == 'string') {
values = [values];
}
$.each(values, function(index, value) {
var
name = module.read.remoteData(value)
;
module.verbose('Restoring value from session data', name, value);
if(name) {
if(!remoteValues) {
remoteValues = {};
}
remoteValues[value] = name;
}
});
}
return remoteValues;
},
choiceText: function($choice, preserveHTML) {
preserveHTML = (preserveHTML !== undefined)
? preserveHTML
: settings.preserveHTML
;
if($choice) {
if($choice.find(selector.menu).length > 0) {
module.verbose('Retrieving text of element with sub-menu');
$choice = $choice.clone();
$choice.find(selector.menu).remove();
$choice.find(selector.menuIcon).remove();
}
return ($choice.data(metadata.text) !== undefined)
? $choice.data(metadata.text)
: (preserveHTML)
? $.trim($choice.html())
: $.trim($choice.text())
;
}
},
choiceValue: function($choice, choiceText) {
choiceText = choiceText || module.get.choiceText($choice);
if(!$choice) {
return false;
}
return ($choice.data(metadata.value) !== undefined)
? String( $choice.data(metadata.value) )
: (typeof choiceText === 'string')
? $.trim(choiceText.toLowerCase())
: String(choiceText)
;
},
inputEvent: function() {
var
input = $search[0]
;
if(input) {
return (input.oninput !== undefined)
? 'input'
: (input.onpropertychange !== undefined)
? 'propertychange'
: 'keyup'
;
}
return false;
},
selectValues: function() {
var
select = {}
;
select.values = [];
$module
.find('option')
.each(function() {
var
$option = $(this),
name = $option.html(),
disabled = $option.attr('disabled'),
value = ( $option.attr('value') !== undefined )
? $option.attr('value')
: name
;
if(settings.placeholder === 'auto' && value === '') {
select.placeholder = name;
}
else {
select.values.push({
name : name,
value : value,
disabled : disabled
});
}
})
;
if(settings.placeholder && settings.placeholder !== 'auto') {
module.debug('Setting placeholder value to', settings.placeholder);
select.placeholder = settings.placeholder;
}
if(settings.sortSelect) {
select.values.sort(function(a, b) {
return (a.name > b.name)
? 1
: -1
;
});
module.debug('Retrieved and sorted values from select', select);
}
else {
module.debug('Retrieved values from select', select);
}
return select;
},
activeItem: function() {
return $item.filter('.' + className.active);
},
selectedItem: function() {
var
$selectedItem = $item.not(selector.unselectable).filter('.' + className.selected)
;
return ($selectedItem.length > 0)
? $selectedItem
: $item.eq(0)
;
},
itemWithAdditions: function(value) {
var
$items = module.get.item(value),
$userItems = module.create.userChoice(value),
hasUserItems = ($userItems && $userItems.length > 0)
;
if(hasUserItems) {
$items = ($items.length > 0)
? $items.add($userItems)
: $userItems
;
}
return $items;
},
item: function(value, strict) {
var
$selectedItem = false,
shouldSearch,
isMultiple
;
value = (value !== undefined)
? value
: ( module.get.values() !== undefined)
? module.get.values()
: module.get.text()
;
shouldSearch = (isMultiple)
? (value.length > 0)
: (value !== undefined && value !== null)
;
isMultiple = (module.is.multiple() && $.isArray(value));
strict = (value === '' || value === 0)
? true
: strict || false
;
if(shouldSearch) {
$item
.each(function() {
var
$choice = $(this),
optionText = module.get.choiceText($choice),
optionValue = module.get.choiceValue($choice, optionText)
;
// safe early exit
if(optionValue === null || optionValue === undefined) {
return;
}
if(isMultiple) {
if($.inArray( String(optionValue), value) !== -1 || $.inArray(optionText, value) !== -1) {
$selectedItem = ($selectedItem)
? $selectedItem.add($choice)
: $choice
;
}
}
else if(strict) {
module.verbose('Ambiguous dropdown value using strict type check', $choice, value);
if( optionValue === value || optionText === value) {
$selectedItem = $choice;
return true;
}
}
else {
if( String(optionValue) == String(value) || optionText == value) {
module.verbose('Found select item by value', optionValue, value);
$selectedItem = $choice;
return true;
}
}
})
;
}
return $selectedItem;
}
},
check: {
maxSelections: function(selectionCount) {
if(settings.maxSelections) {
selectionCount = (selectionCount !== undefined)
? selectionCount
: module.get.selectionCount()
;
if(selectionCount >= settings.maxSelections) {
module.debug('Maximum selection count reached');
if(settings.useLabels) {
$item.addClass(className.filtered);
module.add.message(message.maxSelections);
}
return true;
}
else {
module.verbose('No longer at maximum selection count');
module.remove.message();
module.remove.filteredItem();
if(module.is.searchSelection()) {
module.filterItems();
}
return false;
}
}
return true;
}
},
restore: {
defaults: function() {
module.clear();
module.restore.defaultText();
module.restore.defaultValue();
},
defaultText: function() {
var
defaultText = module.get.defaultText(),
placeholderText = module.get.placeholderText
;
if(defaultText === placeholderText) {
module.debug('Restoring default placeholder text', defaultText);
module.set.placeholderText(defaultText);
}
else {
module.debug('Restoring default text', defaultText);
module.set.text(defaultText);
}
},
placeholderText: function() {
module.set.placeholderText();
},
defaultValue: function() {
var
defaultValue = module.get.defaultValue()
;
if(defaultValue !== undefined) {
module.debug('Restoring default value', defaultValue);
if(defaultValue !== '') {
module.set.value(defaultValue);
module.set.selected();
}
else {
module.remove.activeItem();
module.remove.selectedItem();
}
}
},
labels: function() {
if(settings.allowAdditions) {
if(!settings.useLabels) {
module.error(error.labels);
settings.useLabels = true;
}
module.debug('Restoring selected values');
module.create.userLabels();
}
module.check.maxSelections();
},
selected: function() {
module.restore.values();
if(module.is.multiple()) {
module.debug('Restoring previously selected values and labels');
module.restore.labels();
}
else {
module.debug('Restoring previously selected values');
}
},
values: function() {
// prevents callbacks from occurring on initial load
module.set.initialLoad();
if(settings.apiSettings && settings.saveRemoteData && module.get.remoteValues()) {
module.restore.remoteValues();
}
else {
module.set.selected();
}
module.remove.initialLoad();
},
remoteValues: function() {
var
values = module.get.remoteValues()
;
module.debug('Recreating selected from session data', values);
if(values) {
if( module.is.single() ) {
$.each(values, function(value, name) {
module.set.text(name);
});
}
else {
$.each(values, function(value, name) {
module.add.label(value, name);
});
}
}
}
},
read: {
remoteData: function(value) {
var
name
;
if(window.Storage === undefined) {
module.error(error.noStorage);
return;
}
name = sessionStorage.getItem(value);
return (name !== undefined)
? name
: false
;
}
},
save: {
defaults: function() {
module.save.defaultText();
module.save.placeholderText();
module.save.defaultValue();
},
defaultValue: function() {
var
value = module.get.value()
;
module.verbose('Saving default value as', value);
$module.data(metadata.defaultValue, value);
},
defaultText: function() {
var
text = module.get.text()
;
module.verbose('Saving default text as', text);
$module.data(metadata.defaultText, text);
},
placeholderText: function() {
var
text
;
if(settings.placeholder !== false && $text.hasClass(className.placeholder)) {
text = module.get.text();
module.verbose('Saving placeholder text as', text);
$module.data(metadata.placeholderText, text);
}
},
remoteData: function(name, value) {
if(window.Storage === undefined) {
module.error(error.noStorage);
return;
}
module.verbose('Saving remote data to session storage', value, name);
sessionStorage.setItem(value, name);
}
},
clear: function() {
if(module.is.multiple() && settings.useLabels) {
module.remove.labels();
}
else {
module.remove.activeItem();
module.remove.selectedItem();
}
module.set.placeholderText();
module.clearValue();
},
clearValue: function() {
module.set.value('');
},
scrollPage: function(direction, $selectedItem) {
var
$currentItem = $selectedItem || module.get.selectedItem(),
$menu = $currentItem.closest(selector.menu),
menuHeight = $menu.outerHeight(),
currentScroll = $menu.scrollTop(),
itemHeight = $item.eq(0).outerHeight(),
itemsPerPage = Math.floor(menuHeight / itemHeight),
maxScroll = $menu.prop('scrollHeight'),
newScroll = (direction == 'up')
? currentScroll - (itemHeight * itemsPerPage)
: currentScroll + (itemHeight * itemsPerPage),
$selectableItem = $item.not(selector.unselectable),
isWithinRange,
$nextSelectedItem,
elementIndex
;
elementIndex = (direction == 'up')
? $selectableItem.index($currentItem) - itemsPerPage
: $selectableItem.index($currentItem) + itemsPerPage
;
isWithinRange = (direction == 'up')
? (elementIndex >= 0)
: (elementIndex < $selectableItem.length)
;
$nextSelectedItem = (isWithinRange)
? $selectableItem.eq(elementIndex)
: (direction == 'up')
? $selectableItem.first()
: $selectableItem.last()
;
if($nextSelectedItem.length > 0) {
module.debug('Scrolling page', direction, $nextSelectedItem);
$currentItem
.removeClass(className.selected)
;
$nextSelectedItem
.addClass(className.selected)
;
if(settings.selectOnKeydown && module.is.single()) {
module.set.selectedItem($nextSelectedItem);
}
$menu
.scrollTop(newScroll)
;
}
},
set: {
filtered: function() {
var
isMultiple = module.is.multiple(),
isSearch = module.is.searchSelection(),
isSearchMultiple = (isMultiple && isSearch),
searchValue = (isSearch)
? module.get.query()
: '',
hasSearchValue = (typeof searchValue === 'string' && searchValue.length > 0),
searchWidth = module.get.searchWidth(),
valueIsSet = searchValue !== ''
;
if(isMultiple && hasSearchValue) {
module.verbose('Adjusting input width', searchWidth, settings.glyphWidth);
$search.css('width', searchWidth);
}
if(hasSearchValue || (isSearchMultiple && valueIsSet)) {
module.verbose('Hiding placeholder text');
$text.addClass(className.filtered);
}
else if(!isMultiple || (isSearchMultiple && !valueIsSet)) {
module.verbose('Showing placeholder text');
$text.removeClass(className.filtered);
}
},
empty: function() {
$module.addClass(className.empty);
},
loading: function() {
$module.addClass(className.loading);
},
placeholderText: function(text) {
text = text || module.get.placeholderText();
module.debug('Setting placeholder text', text);
module.set.text(text);
$text.addClass(className.placeholder);
},
tabbable: function() {
if( module.is.searchSelection() ) {
module.debug('Added tabindex to searchable dropdown');
$search
.val('')
.attr('tabindex', 0)
;
$menu
.attr('tabindex', -1)
;
}
else {
module.debug('Added tabindex to dropdown');
if( $module.attr('tabindex') === undefined) {
$module
.attr('tabindex', 0)
;
$menu
.attr('tabindex', -1)
;
}
}
},
initialLoad: function() {
module.verbose('Setting initial load');
initialLoad = true;
},
activeItem: function($item) {
if( settings.allowAdditions && $item.filter(selector.addition).length > 0 ) {
$item.addClass(className.filtered);
}
else {
$item.addClass(className.active);
}
},
partialSearch: function(text) {
var
length = module.get.query().length
;
$search.val( text.substr(0, length));
},
scrollPosition: function($item, forceScroll) {
var
edgeTolerance = 5,
$menu,
hasActive,
offset,
itemHeight,
itemOffset,
menuOffset,
menuScroll,
menuHeight,
abovePage,
belowPage
;
$item = $item || module.get.selectedItem();
$menu = $item.closest(selector.menu);
hasActive = ($item && $item.length > 0);
forceScroll = (forceScroll !== undefined)
? forceScroll
: false
;
if($item && $menu.length > 0 && hasActive) {
itemOffset = $item.position().top;
$menu.addClass(className.loading);
menuScroll = $menu.scrollTop();
menuOffset = $menu.offset().top;
itemOffset = $item.offset().top;
offset = menuScroll - menuOffset + itemOffset;
if(!forceScroll) {
menuHeight = $menu.height();
belowPage = menuScroll + menuHeight < (offset + edgeTolerance);
abovePage = ((offset - edgeTolerance) < menuScroll);
}
module.debug('Scrolling to active item', offset);
if(forceScroll || abovePage || belowPage) {
$menu.scrollTop(offset);
}
$menu.removeClass(className.loading);
}
},
text: function(text) {
if(settings.action !== 'select') {
if(settings.action == 'combo') {
module.debug('Changing combo button text', text, $combo);
if(settings.preserveHTML) {
$combo.html(text);
}
else {
$combo.text(text);
}
}
else {
if(text !== module.get.placeholderText()) {
$text.removeClass(className.placeholder);
}
module.debug('Changing text', text, $text);
$text
.removeClass(className.filtered)
;
if(settings.preserveHTML) {
$text.html(text);
}
else {
$text.text(text);
}
}
}
},
selectedItem: function($item) {
var
value = module.get.choiceValue($item),
searchText = module.get.choiceText($item, false),
text = module.get.choiceText($item, true)
;
module.debug('Setting user selection to item', $item);
module.remove.activeItem();
module.set.partialSearch(searchText);
module.set.activeItem($item);
module.set.selected(value, $item);
module.set.text(text);
},
selectedLetter: function(letter) {
var
$selectedItem = $item.filter('.' + className.selected),
alreadySelectedLetter = $selectedItem.length > 0 && module.has.firstLetter($selectedItem, letter),
$nextValue = false,
$nextItem
;
// check next of same letter
if(alreadySelectedLetter) {
$nextItem = $selectedItem.nextAll($item).eq(0);
if( module.has.firstLetter($nextItem, letter) ) {
$nextValue = $nextItem;
}
}
// check all values
if(!$nextValue) {
$item
.each(function(){
if(module.has.firstLetter($(this), letter)) {
$nextValue = $(this);
return false;
}
})
;
}
// set next value
if($nextValue) {
module.verbose('Scrolling to next value with letter', letter);
module.set.scrollPosition($nextValue);
$selectedItem.removeClass(className.selected);
$nextValue.addClass(className.selected);
if(settings.selectOnKeydown && module.is.single()) {
module.set.selectedItem($nextValue);
}
}
},
direction: function($menu) {
if(settings.direction == 'auto') {
// reset position
module.remove.upward();
if(module.can.openDownward($menu)) {
module.remove.upward($menu);
}
else {
module.set.upward($menu);
}
if(!module.is.leftward($menu) && !module.can.openRightward($menu)) {
module.set.leftward($menu);
}
}
else if(settings.direction == 'upward') {
module.set.upward($menu);
}
},
upward: function($currentMenu) {
var $element = $currentMenu || $module;
$element.addClass(className.upward);
},
leftward: function($currentMenu) {
var $element = $currentMenu || $menu;
$element.addClass(className.leftward);
},
value: function(value, text, $selected) {
var
escapedValue = module.escape.value(value),
hasInput = ($input.length > 0),
currentValue = module.get.values(),
stringValue = (value !== undefined)
? String(value)
: value,
newValue
;
if(hasInput) {
if(!settings.allowReselection && stringValue == currentValue) {
module.verbose('Skipping value update already same value', value, currentValue);
if(!module.is.initialLoad()) {
return;
}
}
if( module.is.single() && module.has.selectInput() && module.can.extendSelect() ) {
module.debug('Adding user option', value);
module.add.optionValue(value);
}
module.debug('Updating input value', escapedValue, currentValue);
internalChange = true;
$input
.val(escapedValue)
;
if(settings.fireOnInit === false && module.is.initialLoad()) {
module.debug('Input native change event ignored on initial load');
}
else {
module.trigger.change();
}
internalChange = false;
}
else {
module.verbose('Storing value in metadata', escapedValue, $input);
if(escapedValue !== currentValue) {
$module.data(metadata.value, stringValue);
}
}
if(module.is.single() && settings.clearable) {
// treat undefined or '' as empty
if(!escapedValue) {
module.remove.clearable();
}
else {
module.set.clearable();
}
}
if(settings.fireOnInit === false && module.is.initialLoad()) {
module.verbose('No callback on initial load', settings.onChange);
}
else {
settings.onChange.call(element, value, text, $selected);
}
},
active: function() {
$module
.addClass(className.active)
;
},
multiple: function() {
$module.addClass(className.multiple);
},
visible: function() {
$module.addClass(className.visible);
},
exactly: function(value, $selectedItem) {
module.debug('Setting selected to exact values');
module.clear();
module.set.selected(value, $selectedItem);
},
selected: function(value, $selectedItem) {
var
isMultiple = module.is.multiple(),
$userSelectedItem
;
$selectedItem = (settings.allowAdditions)
? $selectedItem || module.get.itemWithAdditions(value)
: $selectedItem || module.get.item(value)
;
if(!$selectedItem) {
return;
}
module.debug('Setting selected menu item to', $selectedItem);
if(module.is.multiple()) {
module.remove.searchWidth();
}
if(module.is.single()) {
module.remove.activeItem();
module.remove.selectedItem();
}
else if(settings.useLabels) {
module.remove.selectedItem();
}
// select each item
$selectedItem
.each(function() {
var
$selected = $(this),
selectedText = module.get.choiceText($selected),
selectedValue = module.get.choiceValue($selected, selectedText),
isFiltered = $selected.hasClass(className.filtered),
isActive = $selected.hasClass(className.active),
isUserValue = $selected.hasClass(className.addition),
shouldAnimate = (isMultiple && $selectedItem.length == 1)
;
if(isMultiple) {
if(!isActive || isUserValue) {
if(settings.apiSettings && settings.saveRemoteData) {
module.save.remoteData(selectedText, selectedValue);
}
if(settings.useLabels) {
module.add.label(selectedValue, selectedText, shouldAnimate);
module.add.value(selectedValue, selectedText, $selected);
module.set.activeItem($selected);
module.filterActive();
module.select.nextAvailable($selectedItem);
}
else {
module.add.value(selectedValue, selectedText, $selected);
module.set.text(module.add.variables(message.count));
module.set.activeItem($selected);
}
}
else if(!isFiltered) {
module.debug('Selected active value, removing label');
module.remove.selected(selectedValue);
}
}
else {
if(settings.apiSettings && settings.saveRemoteData) {
module.save.remoteData(selectedText, selectedValue);
}
module.set.text(selectedText);
module.set.value(selectedValue, selectedText, $selected);
$selected
.addClass(className.active)
.addClass(className.selected)
;
}
})
;
},
clearable: function() {
$icon.addClass(className.clear);
},
},
add: {
label: function(value, text, shouldAnimate) {
var
$next = module.is.searchSelection()
? $search
: $text,
escapedValue = module.escape.value(value),
$label
;
if(settings.ignoreCase) {
escapedValue = escapedValue.toLowerCase();
}
$label = $('<a />')
.addClass(className.label)
.attr('data-' + metadata.value, escapedValue)
.html(templates.label(escapedValue, text))
;
$label = settings.onLabelCreate.call($label, escapedValue, text);
if(module.has.label(value)) {
module.debug('User selection already exists, skipping', escapedValue);
return;
}
if(settings.label.variation) {
$label.addClass(settings.label.variation);
}
if(shouldAnimate === true) {
module.debug('Animating in label', $label);
$label
.addClass(className.hidden)
.insertBefore($next)
.transition(settings.label.transition, settings.label.duration)
;
}
else {
module.debug('Adding selection label', $label);
$label
.insertBefore($next)
;
}
},
message: function(message) {
var
$message = $menu.children(selector.message),
html = settings.templates.message(module.add.variables(message))
;
if($message.length > 0) {
$message
.html(html)
;
}
else {
$message = $('<div/>')
.html(html)
.addClass(className.message)
.appendTo($menu)
;
}
},
optionValue: function(value) {
var
escapedValue = module.escape.value(value),
$option = $input.find('option[value="' + module.escape.string(escapedValue) + '"]'),
hasOption = ($option.length > 0)
;
if(hasOption) {
return;
}
// temporarily disconnect observer
module.disconnect.selectObserver();
if( module.is.single() ) {
module.verbose('Removing previous user addition');
$input.find('option.' + className.addition).remove();
}
$('<option/>')
.prop('value', escapedValue)
.addClass(className.addition)
.html(value)
.appendTo($input)
;
module.verbose('Adding user addition as an <option>', value);
module.observe.select();
},
userSuggestion: function(value) {
var
$addition = $menu.children(selector.addition),
$existingItem = module.get.item(value),
alreadyHasValue = $existingItem && $existingItem.not(selector.addition).length,
hasUserSuggestion = $addition.length > 0,
html
;
if(settings.useLabels && module.has.maxSelections()) {
return;
}
if(value === '' || alreadyHasValue) {
$addition.remove();
return;
}
if(hasUserSuggestion) {
$addition
.data(metadata.value, value)
.data(metadata.text, value)
.attr('data-' + metadata.value, value)
.attr('data-' + metadata.text, value)
.removeClass(className.filtered)
;
if(!settings.hideAdditions) {
html = settings.templates.addition( module.add.variables(message.addResult, value) );
$addition
.html(html)
;
}
module.verbose('Replacing user suggestion with new value', $addition);
}
else {
$addition = module.create.userChoice(value);
$addition
.prependTo($menu)
;
module.verbose('Adding item choice to menu corresponding with user choice addition', $addition);
}
if(!settings.hideAdditions || module.is.allFiltered()) {
$addition
.addClass(className.selected)
.siblings()
.removeClass(className.selected)
;
}
module.refreshItems();
},
variables: function(message, term) {
var
hasCount = (message.search('{count}') !== -1),
hasMaxCount = (message.search('{maxCount}') !== -1),
hasTerm = (message.search('{term}') !== -1),
values,
count,
query
;
module.verbose('Adding templated variables to message', message);
if(hasCount) {
count = module.get.selectionCount();
message = message.replace('{count}', count);
}
if(hasMaxCount) {
count = module.get.selectionCount();
message = message.replace('{maxCount}', settings.maxSelections);
}
if(hasTerm) {
query = term || module.get.query();
message = message.replace('{term}', query);
}
return message;
},
value: function(addedValue, addedText, $selectedItem) {
var
currentValue = module.get.values(),
newValue
;
if(module.has.value(addedValue)) {
module.debug('Value already selected');
return;
}
if(addedValue === '') {
module.debug('Cannot select blank values from multiselect');
return;
}
// extend current array
if($.isArray(currentValue)) {
newValue = currentValue.concat([addedValue]);
newValue = module.get.uniqueArray(newValue);
}
else {
newValue = [addedValue];
}
// add values
if( module.has.selectInput() ) {
if(module.can.extendSelect()) {
module.debug('Adding value to select', addedValue, newValue, $input);
module.add.optionValue(addedValue);
}
}
else {
newValue = newValue.join(settings.delimiter);
module.debug('Setting hidden input to delimited value', newValue, $input);
}
if(settings.fireOnInit === false && module.is.initialLoad()) {
module.verbose('Skipping onadd callback on initial load', settings.onAdd);
}
else {
settings.onAdd.call(element, addedValue, addedText, $selectedItem);
}
module.set.value(newValue, addedValue, addedText, $selectedItem);
module.check.maxSelections();
},
},
remove: {
active: function() {
$module.removeClass(className.active);
},
activeLabel: function() {
$module.find(selector.label).removeClass(className.active);
},
empty: function() {
$module.removeClass(className.empty);
},
loading: function() {
$module.removeClass(className.loading);
},
initialLoad: function() {
initialLoad = false;
},
upward: function($currentMenu) {
var $element = $currentMenu || $module;
$element.removeClass(className.upward);
},
leftward: function($currentMenu) {
var $element = $currentMenu || $menu;
$element.removeClass(className.leftward);
},
visible: function() {
$module.removeClass(className.visible);
},
activeItem: function() {
$item.removeClass(className.active);
},
filteredItem: function() {
if(settings.useLabels && module.has.maxSelections() ) {
return;
}
if(settings.useLabels && module.is.multiple()) {
$item.not('.' + className.active).removeClass(className.filtered);
}
else {
$item.removeClass(className.filtered);
}
module.remove.empty();
},
optionValue: function(value) {
var
escapedValue = module.escape.value(value),
$option = $input.find('option[value="' + module.escape.string(escapedValue) + '"]'),
hasOption = ($option.length > 0)
;
if(!hasOption || !$option.hasClass(className.addition)) {
return;
}
// temporarily disconnect observer
if(selectObserver) {
selectObserver.disconnect();
module.verbose('Temporarily disconnecting mutation observer');
}
$option.remove();
module.verbose('Removing user addition as an <option>', escapedValue);
if(selectObserver) {
selectObserver.observe($input[0], {
childList : true,
subtree : true
});
}
},
message: function() {
$menu.children(selector.message).remove();
},
searchWidth: function() {
$search.css('width', '');
},
searchTerm: function() {
module.verbose('Cleared search term');
$search.val('');
module.set.filtered();
},
userAddition: function() {
$item.filter(selector.addition).remove();
},
selected: function(value, $selectedItem) {
$selectedItem = (settings.allowAdditions)
? $selectedItem || module.get.itemWithAdditions(value)
: $selectedItem || module.get.item(value)
;
if(!$selectedItem) {
return false;
}
$selectedItem
.each(function() {
var
$selected = $(this),
selectedText = module.get.choiceText($selected),
selectedValue = module.get.choiceValue($selected, selectedText)
;
if(module.is.multiple()) {
if(settings.useLabels) {
module.remove.value(selectedValue, selectedText, $selected);
module.remove.label(selectedValue);
}
else {
module.remove.value(selectedValue, selectedText, $selected);
if(module.get.selectionCount() === 0) {
module.set.placeholderText();
}
else {
module.set.text(module.add.variables(message.count));
}
}
}
else {
module.remove.value(selectedValue, selectedText, $selected);
}
$selected
.removeClass(className.filtered)
.removeClass(className.active)
;
if(settings.useLabels) {
$selected.removeClass(className.selected);
}
})
;
},
selectedItem: function() {
$item.removeClass(className.selected);
},
value: function(removedValue, removedText, $removedItem) {
var
values = module.get.values(),
newValue
;
if( module.has.selectInput() ) {
module.verbose('Input is <select> removing selected option', removedValue);
newValue = module.remove.arrayValue(removedValue, values);
module.remove.optionValue(removedValue);
}
else {
module.verbose('Removing from delimited values', removedValue);
newValue = module.remove.arrayValue(removedValue, values);
newValue = newValue.join(settings.delimiter);
}
if(settings.fireOnInit === false && module.is.initialLoad()) {
module.verbose('No callback on initial load', settings.onRemove);
}
else {
settings.onRemove.call(element, removedValue, removedText, $removedItem);
}
module.set.value(newValue, removedText, $removedItem);
module.check.maxSelections();
},
arrayValue: function(removedValue, values) {
if( !$.isArray(values) ) {
values = [values];
}
values = $.grep(values, function(value){
return (removedValue != value);
});
module.verbose('Removed value from delimited string', removedValue, values);
return values;
},
label: function(value, shouldAnimate) {
var
$labels = $module.find(selector.label),
$removedLabel = $labels.filter('[data-' + metadata.value + '="' + module.escape.string(value) +'"]')
;
module.verbose('Removing label', $removedLabel);
$removedLabel.remove();
},
activeLabels: function($activeLabels) {
$activeLabels = $activeLabels || $module.find(selector.label).filter('.' + className.active);
module.verbose('Removing active label selections', $activeLabels);
module.remove.labels($activeLabels);
},
labels: function($labels) {
$labels = $labels || $module.find(selector.label);
module.verbose('Removing labels', $labels);
$labels
.each(function(){
var
$label = $(this),
value = $label.data(metadata.value),
stringValue = (value !== undefined)
? String(value)
: value,
isUserValue = module.is.userValue(stringValue)
;
if(settings.onLabelRemove.call($label, value) === false) {
module.debug('Label remove callback cancelled removal');
return;
}
module.remove.message();
if(isUserValue) {
module.remove.value(stringValue);
module.remove.label(stringValue);
}
else {
// selected will also remove label
module.remove.selected(stringValue);
}
})
;
},
tabbable: function() {
if( module.is.searchSelection() ) {
module.debug('Searchable dropdown initialized');
$search
.removeAttr('tabindex')
;
$menu
.removeAttr('tabindex')
;
}
else {
module.debug('Simple selection dropdown initialized');
$module
.removeAttr('tabindex')
;
$menu
.removeAttr('tabindex')
;
}
},
clearable: function() {
$icon.removeClass(className.clear);
}
},
has: {
menuSearch: function() {
return (module.has.search() && $search.closest($menu).length > 0);
},
search: function() {
return ($search.length > 0);
},
sizer: function() {
return ($sizer.length > 0);
},
selectInput: function() {
return ( $input.is('select') );
},
minCharacters: function(searchTerm) {
if(settings.minCharacters) {
searchTerm = (searchTerm !== undefined)
? String(searchTerm)
: String(module.get.query())
;
return (searchTerm.length >= settings.minCharacters);
}
return true;
},
firstLetter: function($item, letter) {
var
text,
firstLetter
;
if(!$item || $item.length === 0 || typeof letter !== 'string') {
return false;
}
text = module.get.choiceText($item, false);
letter = letter.toLowerCase();
firstLetter = String(text).charAt(0).toLowerCase();
return (letter == firstLetter);
},
input: function() {
return ($input.length > 0);
},
items: function() {
return ($item.length > 0);
},
menu: function() {
return ($menu.length > 0);
},
message: function() {
return ($menu.children(selector.message).length !== 0);
},
label: function(value) {
var
escapedValue = module.escape.value(value),
$labels = $module.find(selector.label)
;
if(settings.ignoreCase) {
escapedValue = escapedValue.toLowerCase();
}
return ($labels.filter('[data-' + metadata.value + '="' + module.escape.string(escapedValue) +'"]').length > 0);
},
maxSelections: function() {
return (settings.maxSelections && module.get.selectionCount() >= settings.maxSelections);
},
allResultsFiltered: function() {
var
$normalResults = $item.not(selector.addition)
;
return ($normalResults.filter(selector.unselectable).length === $normalResults.length);
},
userSuggestion: function() {
return ($menu.children(selector.addition).length > 0);
},
query: function() {
return (module.get.query() !== '');
},
value: function(value) {
return (settings.ignoreCase)
? module.has.valueIgnoringCase(value)
: module.has.valueMatchingCase(value)
;
},
valueMatchingCase: function(value) {
var
values = module.get.values(),
hasValue = $.isArray(values)
? values && ($.inArray(value, values) !== -1)
: (values == value)
;
return (hasValue)
? true
: false
;
},
valueIgnoringCase: function(value) {
var
values = module.get.values(),
hasValue = false
;
if(!$.isArray(values)) {
values = [values];
}
$.each(values, function(index, existingValue) {
if(String(value).toLowerCase() == String(existingValue).toLowerCase()) {
hasValue = true;
return false;
}
});
return hasValue;
}
},
is: {
active: function() {
return $module.hasClass(className.active);
},
animatingInward: function() {
return $menu.transition('is inward');
},
animatingOutward: function() {
return $menu.transition('is outward');
},
bubbledLabelClick: function(event) {
return $(event.target).is('select, input') && $module.closest('label').length > 0;
},
bubbledIconClick: function(event) {
return $(event.target).closest($icon).length > 0;
},
alreadySetup: function() {
return ($module.is('select') && $module.parent(selector.dropdown).data(moduleNamespace) !== undefined && $module.prev().length === 0);
},
animating: function($subMenu) {
return ($subMenu)
? $subMenu.transition && $subMenu.transition('is animating')
: $menu.transition && $menu.transition('is animating')
;
},
leftward: function($subMenu) {
var $selectedMenu = $subMenu || $menu;
return $selectedMenu.hasClass(className.leftward);
},
disabled: function() {
return $module.hasClass(className.disabled);
},
focused: function() {
return (document.activeElement === $module[0]);
},
focusedOnSearch: function() {
return (document.activeElement === $search[0]);
},
allFiltered: function() {
return( (module.is.multiple() || module.has.search()) && !(settings.hideAdditions == false && module.has.userSuggestion()) && !module.has.message() && module.has.allResultsFiltered() );
},
hidden: function($subMenu) {
return !module.is.visible($subMenu);
},
initialLoad: function() {
return initialLoad;
},
inObject: function(needle, object) {
var
found = false
;
$.each(object, function(index, property) {
if(property == needle) {
found = true;
return true;
}
});
return found;
},
multiple: function() {
return $module.hasClass(className.multiple);
},
remote: function() {
return settings.apiSettings && module.can.useAPI();
},
single: function() {
return !module.is.multiple();
},
selectMutation: function(mutations) {
var
selectChanged = false
;
$.each(mutations, function(index, mutation) {
if(mutation.target && $(mutation.target).is('select')) {
selectChanged = true;
return true;
}
});
return selectChanged;
},
search: function() {
return $module.hasClass(className.search);
},
searchSelection: function() {
return ( module.has.search() && $search.parent(selector.dropdown).length === 1 );
},
selection: function() {
return $module.hasClass(className.selection);
},
userValue: function(value) {
return ($.inArray(value, module.get.userValues()) !== -1);
},
upward: function($menu) {
var $element = $menu || $module;
return $element.hasClass(className.upward);
},
visible: function($subMenu) {
return ($subMenu)
? $subMenu.hasClass(className.visible)
: $menu.hasClass(className.visible)
;
},
verticallyScrollableContext: function() {
var
overflowY = ($context.get(0) !== window)
? $context.css('overflow-y')
: false
;
return (overflowY == 'auto' || overflowY == 'scroll');
},
horizontallyScrollableContext: function() {
var
overflowX = ($context.get(0) !== window)
? $context.css('overflow-X')
: false
;
return (overflowX == 'auto' || overflowX == 'scroll');
}
},
can: {
activate: function($item) {
if(settings.useLabels) {
return true;
}
if(!module.has.maxSelections()) {
return true;
}
if(module.has.maxSelections() && $item.hasClass(className.active)) {
return true;
}
return false;
},
openDownward: function($subMenu) {
var
$currentMenu = $subMenu || $menu,
canOpenDownward = true,
onScreen = {},
calculations
;
$currentMenu
.addClass(className.loading)
;
calculations = {
context: {
offset : ($context.get(0) === window)
? { top: 0, left: 0}
: $context.offset(),
scrollTop : $context.scrollTop(),
height : $context.outerHeight()
},
menu : {
offset: $currentMenu.offset(),
height: $currentMenu.outerHeight()
}
};
if(module.is.verticallyScrollableContext()) {
calculations.menu.offset.top += calculations.context.scrollTop;
}
onScreen = {
above : (calculations.context.scrollTop) <= calculations.menu.offset.top - calculations.context.offset.top - calculations.menu.height,
below : (calculations.context.scrollTop + calculations.context.height) >= calculations.menu.offset.top - calculations.context.offset.top + calculations.menu.height
};
if(onScreen.below) {
module.verbose('Dropdown can fit in context downward', onScreen);
canOpenDownward = true;
}
else if(!onScreen.below && !onScreen.above) {
module.verbose('Dropdown cannot fit in either direction, favoring downward', onScreen);
canOpenDownward = true;
}
else {
module.verbose('Dropdown cannot fit below, opening upward', onScreen);
canOpenDownward = false;
}
$currentMenu.removeClass(className.loading);
return canOpenDownward;
},
openRightward: function($subMenu) {
var
$currentMenu = $subMenu || $menu,
canOpenRightward = true,
isOffscreenRight = false,
calculations
;
$currentMenu
.addClass(className.loading)
;
calculations = {
context: {
offset : ($context.get(0) === window)
? { top: 0, left: 0}
: $context.offset(),
scrollLeft : $context.scrollLeft(),
width : $context.outerWidth()
},
menu: {
offset : $currentMenu.offset(),
width : $currentMenu.outerWidth()
}
};
if(module.is.horizontallyScrollableContext()) {
calculations.menu.offset.left += calculations.context.scrollLeft;
}
isOffscreenRight = (calculations.menu.offset.left - calculations.context.offset.left + calculations.menu.width >= calculations.context.scrollLeft + calculations.context.width);
if(isOffscreenRight) {
module.verbose('Dropdown cannot fit in context rightward', isOffscreenRight);
canOpenRightward = false;
}
$currentMenu.removeClass(className.loading);
return canOpenRightward;
},
click: function() {
return (hasTouch || settings.on == 'click');
},
extendSelect: function() {
return settings.allowAdditions || settings.apiSettings;
},
show: function() {
return !module.is.disabled() && (module.has.items() || module.has.message());
},
useAPI: function() {
return $.fn.api !== undefined;
}
},
animate: {
show: function(callback, $subMenu) {
var
$currentMenu = $subMenu || $menu,
start = ($subMenu)
? function() {}
: function() {
module.hideSubMenus();
module.hideOthers();
module.set.active();
},
transition
;
callback = $.isFunction(callback)
? callback
: function(){}
;
module.verbose('Doing menu show animation', $currentMenu);
module.set.direction($subMenu);
transition = module.get.transition($subMenu);
if( module.is.selection() ) {
module.set.scrollPosition(module.get.selectedItem(), true);
}
if( module.is.hidden($currentMenu) || module.is.animating($currentMenu) ) {
if(transition == 'none') {
start();
$currentMenu.transition('show');
callback.call(element);
}
else if($.fn.transition !== undefined && $module.transition('is supported')) {
$currentMenu
.transition({
animation : transition + ' in',
debug : settings.debug,
verbose : settings.verbose,
duration : settings.duration,
queue : true,
onStart : start,
onComplete : function() {
callback.call(element);
}
})
;
}
else {
module.error(error.noTransition, transition);
}
}
},
hide: function(callback, $subMenu) {
var
$currentMenu = $subMenu || $menu,
duration = ($subMenu)
? (settings.duration * 0.9)
: settings.duration,
start = ($subMenu)
? function() {}
: function() {
if( module.can.click() ) {
module.unbind.intent();
}
module.remove.active();
},
transition = module.get.transition($subMenu)
;
callback = $.isFunction(callback)
? callback
: function(){}
;
if( module.is.visible($currentMenu) || module.is.animating($currentMenu) ) {
module.verbose('Doing menu hide animation', $currentMenu);
if(transition == 'none') {
start();
$currentMenu.transition('hide');
callback.call(element);
}
else if($.fn.transition !== undefined && $module.transition('is supported')) {
$currentMenu
.transition({
animation : transition + ' out',
duration : settings.duration,
debug : settings.debug,
verbose : settings.verbose,
queue : false,
onStart : start,
onComplete : function() {
callback.call(element);
}
})
;
}
else {
module.error(error.transition);
}
}
}
},
hideAndClear: function() {
module.remove.searchTerm();
if( module.has.maxSelections() ) {
return;
}
if(module.has.search()) {
module.hide(function() {
module.remove.filteredItem();
});
}
else {
module.hide();
}
},
delay: {
show: function() {
module.verbose('Delaying show event to ensure user intent');
clearTimeout(module.timer);
module.timer = setTimeout(module.show, settings.delay.show);
},
hide: function() {
module.verbose('Delaying hide event to ensure user intent');
clearTimeout(module.timer);
module.timer = setTimeout(module.hide, settings.delay.hide);
}
},
escape: {
value: function(value) {
var
multipleValues = $.isArray(value),
stringValue = (typeof value === 'string'),
isUnparsable = (!stringValue && !multipleValues),
hasQuotes = (stringValue && value.search(regExp.quote) !== -1),
values = []
;
if(isUnparsable || !hasQuotes) {
return value;
}
module.debug('Encoding quote values for use in select', value);
if(multipleValues) {
$.each(value, function(index, value){
values.push(value.replace(regExp.quote, '"'));
});
return values;
}
return value.replace(regExp.quote, '"');
},
string: function(text) {
text = String(text);
return text.replace(regExp.escape, '\\$&');
}
},
setting: function(name, value) {
module.debug('Changing setting', name, value);
if( $.isPlainObject(name) ) {
$.extend(true, settings, name);
}
else if(value !== undefined) {
if($.isPlainObject(settings[name])) {
$.extend(true, settings[name], value);
}
else {
settings[name] = value;
}
}
else {
return settings[name];
}
},
internal: function(name, value) {
if( $.isPlainObject(name) ) {
$.extend(true, module, name);
}
else if(value !== undefined) {
module[name] = value;
}
else {
return module[name];
}
},
debug: function() {
if(!settings.silent && settings.debug) {
if(settings.performance) {
module.performance.log(arguments);
}
else {
module.debug = Function.prototype.bind.call(console.info, console, settings.name + ':');
module.debug.apply(console, arguments);
}
}
},
verbose: function() {
if(!settings.silent && settings.verbose && settings.debug) {
if(settings.performance) {
module.performance.log(arguments);
}
else {
module.verbose = Function.prototype.bind.call(console.info, console, settings.name + ':');
module.verbose.apply(console, arguments);
}
}
},
error: function() {
if(!settings.silent) {
module.error = Function.prototype.bind.call(console.error, console, settings.name + ':');
module.error.apply(console, arguments);
}
},
performance: {
log: function(message) {
var
currentTime,
executionTime,
previousTime
;
if(settings.performance) {
currentTime = new Date().getTime();
previousTime = time || currentTime;
executionTime = currentTime - previousTime;
time = currentTime;
performance.push({
'Name' : message[0],
'Arguments' : [].slice.call(message, 1) || '',
'Element' : element,
'Execution Time' : executionTime
});
}
clearTimeout(module.performance.timer);
module.performance.timer = setTimeout(module.performance.display, 500);
},
display: function() {
var
title = settings.name + ':',
totalTime = 0
;
time = false;
clearTimeout(module.performance.timer);
$.each(performance, function(index, data) {
totalTime += data['Execution Time'];
});
title += ' ' + totalTime + 'ms';
if(moduleSelector) {
title += ' \'' + moduleSelector + '\'';
}
if( (console.group !== undefined || console.table !== undefined) && performance.length > 0) {
console.groupCollapsed(title);
if(console.table) {
console.table(performance);
}
else {
$.each(performance, function(index, data) {
console.log(data['Name'] + ': ' + data['Execution Time']+'ms');
});
}
console.groupEnd();
}
performance = [];
}
},
invoke: function(query, passedArguments, context) {
var
object = instance,
maxDepth,
found,
response
;
passedArguments = passedArguments || queryArguments;
context = element || context;
if(typeof query == 'string' && object !== undefined) {
query = query.split(/[\. ]/);
maxDepth = query.length - 1;
$.each(query, function(depth, value) {
var camelCaseValue = (depth != maxDepth)
? value + query[depth + 1].charAt(0).toUpperCase() + query[depth + 1].slice(1)
: query
;
if( $.isPlainObject( object[camelCaseValue] ) && (depth != maxDepth) ) {
object = object[camelCaseValue];
}
else if( object[camelCaseValue] !== undefined ) {
found = object[camelCaseValue];
return false;
}
else if( $.isPlainObject( object[value] ) && (depth != maxDepth) ) {
object = object[value];
}
else if( object[value] !== undefined ) {
found = object[value];
return false;
}
else {
module.error(error.method, query);
return false;
}
});
}
if ( $.isFunction( found ) ) {
response = found.apply(context, passedArguments);
}
else if(found !== undefined) {
response = found;
}
if($.isArray(returnedValue)) {
returnedValue.push(response);
}
else if(returnedValue !== undefined) {
returnedValue = [returnedValue, response];
}
else if(response !== undefined) {
returnedValue = response;
}
return found;
}
};
if(methodInvoked) {
if(instance === undefined) {
module.initialize();
}
module.invoke(query);
}
else {
if(instance !== undefined) {
instance.invoke('destroy');
}
module.initialize();
}
})
;
return (returnedValue !== undefined)
? returnedValue
: $allModules
;
};
$.fn.dropdown.settings = {
silent : false,
debug : false,
verbose : false,
performance : true,
on : 'click', // what event should show menu action on item selection
action : 'activate', // action on item selection (nothing, activate, select, combo, hide, function(){})
values : false, // specify values to use for dropdown
clearable : false, // whether the value of the dropdown can be cleared
apiSettings : false,
selectOnKeydown : true, // Whether selection should occur automatically when keyboard shortcuts used
minCharacters : 0, // Minimum characters required to trigger API call
filterRemoteData : false, // Whether API results should be filtered after being returned for query term
saveRemoteData : true, // Whether remote name/value pairs should be stored in sessionStorage to allow remote data to be restored on page refresh
throttle : 200, // How long to wait after last user input to search remotely
context : window, // Context to use when determining if on screen
direction : 'auto', // Whether dropdown should always open in one direction
keepOnScreen : true, // Whether dropdown should check whether it is on screen before showing
match : 'both', // what to match against with search selection (both, text, or label)
fullTextSearch : false, // search anywhere in value (set to 'exact' to require exact matches)
placeholder : 'auto', // whether to convert blank <select> values to placeholder text
preserveHTML : true, // preserve html when selecting value
sortSelect : false, // sort selection on init
forceSelection : true, // force a choice on blur with search selection
allowAdditions : false, // whether multiple select should allow user added values
ignoreCase : false, // whether to consider values not matching in case to be the same
hideAdditions : true, // whether or not to hide special message prompting a user they can enter a value
maxSelections : false, // When set to a number limits the number of selections to this count
useLabels : true, // whether multiple select should filter currently active selections from choices
delimiter : ',', // when multiselect uses normal <input> the values will be delimited with this character
showOnFocus : true, // show menu on focus
allowReselection : false, // whether current value should trigger callbacks when reselected
allowTab : true, // add tabindex to element
allowCategorySelection : false, // allow elements with sub-menus to be selected
fireOnInit : false, // Whether callbacks should fire when initializing dropdown values
transition : 'auto', // auto transition will slide down or up based on direction
duration : 200, // duration of transition
glyphWidth : 1.037, // widest glyph width in em (W is 1.037 em) used to calculate multiselect input width
// label settings on multi-select
label: {
transition : 'scale',
duration : 200,
variation : false
},
// delay before event
delay : {
hide : 300,
show : 200,
search : 20,
touch : 50
},
/* Callbacks */
onChange : function(value, text, $selected){},
onAdd : function(value, text, $selected){},
onRemove : function(value, text, $selected){},
onLabelSelect : function($selectedLabels){},
onLabelCreate : function(value, text) { return $(this); },
onLabelRemove : function(value) { return true; },
onNoResults : function(searchTerm) { return true; },
onShow : function(){},
onHide : function(){},
/* Component */
name : 'Dropdown',
namespace : 'dropdown',
message: {
addResult : 'Add <b>{term}</b>',
count : '{count} selected',
maxSelections : 'Max {maxCount} selections',
noResults : 'No results found.',
serverError : 'There was an error contacting the server'
},
error : {
action : 'You called a dropdown action that was not defined',
alreadySetup : 'Once a select has been initialized behaviors must be called on the created ui dropdown',
labels : 'Allowing user additions currently requires the use of labels.',
missingMultiple : '<select> requires multiple property to be set to correctly preserve multiple values',
method : 'The method you called is not defined.',
noAPI : 'The API module is required to load resources remotely',
noStorage : 'Saving remote data requires session storage',
noTransition : 'This module requires ui transitions <https://github.com/Semantic-Org/UI-Transition>'
},
regExp : {
escape : /[-[\]{}()*+?.,\\^$|#\s]/g,
quote : /"/g
},
metadata : {
defaultText : 'defaultText',
defaultValue : 'defaultValue',
placeholderText : 'placeholder',
text : 'text',
value : 'value'
},
// property names for remote query
fields: {
remoteValues : 'results', // grouping for api results
values : 'values', // grouping for all dropdown values
disabled : 'disabled', // whether value should be disabled
name : 'name', // displayed dropdown text
value : 'value', // actual dropdown value
text : 'text' // displayed text when selected
},
keys : {
backspace : 8,
delimiter : 188, // comma
deleteKey : 46,
enter : 13,
escape : 27,
pageUp : 33,
pageDown : 34,
leftArrow : 37,
upArrow : 38,
rightArrow : 39,
downArrow : 40
},
selector : {
addition : '.addition',
dropdown : '.ui.dropdown',
hidden : '.hidden',
icon : '> .dropdown.icon',
input : '> input[type="hidden"], > select',
item : '.item',
label : '> .label',
remove : '> .label > .delete.icon',
siblingLabel : '.label',
menu : '.menu',
message : '.message',
menuIcon : '.dropdown.icon',
search : 'input.search, .menu > .search > input, .menu input.search',
sizer : '> input.sizer',
text : '> .text:not(.icon)',
unselectable : '.disabled, .filtered'
},
className : {
active : 'active',
addition : 'addition',
animating : 'animating',
clear : 'clear',
disabled : 'disabled',
empty : 'empty',
dropdown : 'ui dropdown',
filtered : 'filtered',
hidden : 'hidden transition',
item : 'item',
label : 'ui label',
loading : 'loading',
menu : 'menu',
message : 'message',
multiple : 'multiple',
placeholder : 'default',
sizer : 'sizer',
search : 'search',
selected : 'selected',
selection : 'selection',
upward : 'upward',
leftward : 'left',
visible : 'visible'
}
};
/* Templates */
$.fn.dropdown.settings.templates = {
// generates dropdown from select values
dropdown: function(select) {
var
placeholder = select.placeholder || false,
values = select.values || {},
html = ''
;
html += '<i class="dropdown icon"></i>';
if(select.placeholder) {
html += '<div class="default text">' + placeholder + '</div>';
}
else {
html += '<div class="text"></div>';
}
html += '<div class="menu">';
$.each(select.values, function(index, option) {
html += (option.disabled)
? '<div class="disabled item" data-value="' + option.value + '">' + option.name + '</div>'
: '<div class="item" data-value="' + option.value + '">' + option.name + '</div>'
;
});
html += '</div>';
return html;
},
// generates just menu from select
menu: function(response, fields) {
var
values = response[fields.values] || {},
html = ''
;
$.each(values, function(index, option) {
var
maybeText = (option[fields.text])
? 'data-text="' + option[fields.text] + '"'
: '',
maybeDisabled = (option[fields.disabled])
? 'disabled '
: ''
;
html += '<div class="'+ maybeDisabled +'item" data-value="' + option[fields.value] + '"' + maybeText + '>';
html += option[fields.name];
html += '</div>';
});
return html;
},
// generates label for multiselect
label: function(value, text) {
return text + '<i class="delete icon"></i>';
},
// generates messages like "No results"
message: function(message) {
return message;
},
// generates user addition to selection menu
addition: function(choice) {
return choice;
}
};
})( jQuery, window, document );